苏州混凝土水泥制品研究院有限公司

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发布时间:2020-01-06 00:00:00
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杂志简介

主办单位: 苏州混凝土水泥制品研究院
中国混凝土与水泥制品协会
  • 主编 : 李建华
  • 常务副主编 : 王春蓉
  • 刊期 : 月刊
  • 电话 : 0512-68285716
  • E-mail : sccpitg@126.com
  • 国内统一刊号(CN) : 32-1173/TU
  • 国际标准刊号(ISSN) : 1000-4637
  • 邮发代号 : 28-80
hunnitu 微信公众号
hunnitu 扫码订购杂志

混凝土研究

再生大骨料自密实混凝土力学性能研究
再生大骨料自密实混凝土力学性能研究
  • 王建超,赵丰磊,马光卓,裘子铭
2021年第10期
摘要
引用本文
摘   要:通过抗压强度、劈裂抗拉强度、峰值压应变、静态弹性模量和应力-应变关系试验,研究了自密实混凝土强度、再生大骨料强度、再生大骨料粒径对再生大骨料自密实混凝土(RCASCC)力学性能的影响。采用数据拟合的方法对国内外典型混凝土单轴受压应力-应变模型中的相关系数进行了修正,给出了适用于RCASCC的单轴受压本构模型,分别建立了RCASCC抗压强度、劈裂抗拉强度、峰值应变和弹性模量与自密实混凝土强度、再生大骨料强度、再生大骨料粒径的函数关系式,并对4种本构模型的拟合程度进行了比较分析。结果表明:所拟合的三次多项式型曲线和三角函数型曲线与实际应力-应变关系吻合程度相对较高。 Abstract: The effects of the strength of self-compacting concrete, strength of recycled larger size aggregate, size of recycled larger size aggregate on mechanical properties of recycled larger size aggregate self-compacting concrete(RCASCC) were studied through compressive strength, splitting tensile strength, peak compressive strain, elastic modulus and stress-strain relationship tests. The data fitting method was used to correct the correlation coefficients in the typical uniaxial compression stress-strain models of concrete in China and abroad. A uniaxial compression constitutive model for RCASCC was presented. The functional relationship between the compressive strength/splitting tensile strength/peak strain /elastic modulus of RCASCC and the strength of self-compacting concrete, strength of recycled larger size aggregate, size of recycled larger size aggregate was established, and the fitting degree of the four constitutive models was compared and analyzed. The results show that the fitted cubic polynomial curve and trigonometric function curve are in relatively high agreement with the actual stress-strain relationship.
王建超,赵丰磊,马光卓,等.再生大骨料自密实混凝土力学性能研究[J].混凝土与水泥制品,2021(10):1-6. WANG J C,ZHAO F L,MA G Z,et al.Study on Mechanical Properties of Recycled Larger Size Aggregate Self-compacting Concrete[J].China Concrete and Cement Products,2021(10):1-6.
3D打印混凝土技术研究综述
3D打印混凝土技术研究综述
  • 盛 蕾,武 雷
2021年第10期
摘要
引用本文
摘   要:基于国内外现有研究成果,阐述了3D打印混凝土的增强技术、材料性能以及硬化性能三部分内容,指出了3D打印技术在当前应用中存在的关键问题,并提出了今后的重点研究方向。 Abstract: Based on the existing research results at home and abroad, the reinforcement technology, the material properties and hardening properties of 3D printed concrete technology are summarized. Some key problems in the current application of this technology are pointed out, and the key research directions in the future are proposed.
盛蕾,武雷.3D打印混凝土技术研究综述[J].混凝土与水泥制品,2021(10):7-11. SHENG L,WU L.Summary of 3D Printed Concrete Technology Research[J].China Concrete and Cement Products,2021(10):7-11.
基于正交试验的硅粉-纳米SiO2高强灌浆料性能研究
基于正交试验的硅粉-纳米SiO2高强灌浆料性能研究
  • 李政达1,王庆敏1,刘立群2,郦湫翰1,王振宇1
2021年第10期
摘要
引用本文
摘   要:为了制备具有高流动性的高强灌浆料,进行了四因素三水平的正交试验L9(34),研究了硅粉掺量、纳米二氧化硅(NS)掺量、砂胶比、水胶比对硅粉-NS灌浆料的流动度、抗折强度、抗压强度的影响。结合极差分析法,分析了各材料掺量变化对灌浆料流动度、抗折强度、抗压强度的影响程度。结果表明:与NS相比,硅粉对灌浆料早期强度的影响较大;通过优化砂胶比和水胶比,可以配制出流动度好、强度高的硅粉-NS灌浆料。 Abstract: In order to produce high-strength grout with high fluidity, the orthogonal tests L9(34) with four control factors and three levels were carried out via the fluidity tests. The influence of silica fume content, nano-SiO2(NS) content, sand-binder ratio, W/B on the fluidity, flexural strength and compressive strength of silica fume-NS grout was studied. Combined with the range analysis method, the influence degree of each material content change on the fluidity, flexural strength and compressive strength of grout was analyzed. The results show that compared with NS, silica fume has a greater impact on the early strength. By optimizing the sand-binder ratio and W/B, a silica fume-NS grout with good fluidity and high strength can be prepared.
李政达,王庆敏,刘立群,等.基于正交试验的硅粉-纳米SiO2高强灌浆料性能研究[J].混凝土与水泥制品,2021(10):12-15. LI Z D,WANG Q M,LIU L Q,et al.Study on Properties of Silica Fume-nano-SiO2 High-strength Grout Based on Orthogonal Tests[J].China Concrete and Cement Products,2021(10):12-15.
超声波检测弯曲荷载作用下混凝土盐冻损伤试验研究
超声波检测弯曲荷载作用下混凝土盐冻损伤试验研究
  • 康希佞,刘杏娟,冯晓爽,赵胜利,刘 燕
2021年第10期
摘要
引用本文
摘   要:对不同粉煤灰掺量的钢筋混凝土试件进行弯曲荷载下的盐冻循环试验,利用超声波检测研究了弯曲荷载大小、盐冻循环次数对试件损伤的影响,并分析了超声波波速变化率与弯曲荷载、盐冻循环次数与混凝土损伤度的关系以及200次盐冻循环下混凝土损伤层厚度与弯曲荷载、混凝土损伤度的关系。结果表明:弯曲荷载越大,盐冻循环次数越多,超声波波速变化率和试件的损伤层厚度越大,混凝土受损越严重;试件的超声波波速变化率与盐冻循环次数和弯曲荷载呈线性正相关关系;200次盐冻循环时,试件的损伤层厚度与弯曲荷载呈正相关线性关系,试件的损伤度与超声波波速变化率之间呈非线性正相关关系,与损伤层厚度之间呈对数关系。 Abstract: The salt-freezing cycle tests under the bending load state were carried out on the reinforced concrete specimens with different fly ash content. The influence of bending load and the number of salt-freezing cycles on concrete damage was studied by ultrasonic testing. The relationship between ultrasonic wave velocity change rate and bending load, salt-freezing cycle times and concrete damage degree, the thickness of damaged layer and the magnitude of bending load and concrete damage degree under 200 salt-freezing cycles was analyzed. The results show that the greater the bending load, the more salt-freezing cycles, the greater the ultrasonic wave velocity change rate and the thickness of damage layer of specimens, the more serious the concrete damage. The rate of change of ultrasonic wave velocity of specimens has a linear relationship with the number of salt-freezing cycles and the magnitude of the bending load. Under 200 times of salt- freezing cycles, the damage layer thickness of concrete has a positive linear relationship with bending load. There is a positive correlation and nonlinear relationship between the damage degree of the specimen and the rate of change of ultrasonic wave velocity, and the relationship between the damage degree and the thickness of damage layer is logarithmic.
康希佞,刘杏娟,冯晓爽,等.超声波检测弯曲荷载作用下混凝土盐冻损伤试验研究[J].混凝土与水泥制品,2021(10):16-20. KANG X N,LIU X J,FENG X S,et al.Experimental Study on the Salt Freeze Damage of Concrete Under Bending Load by Ultrasonic Testing[J].China Concrete and Cement Products,2021(10):16-20.
轴心受拉构件混凝土有效受拉面积的试验研究
轴心受拉构件混凝土有效受拉面积的试验研究
  • 李金昌1,韩进舟2,李平先1,韩 冲3
2021年第10期
摘要
引用本文
摘   要:通过10根中心配置HRB400级钢筋的混凝土棱柱体构件轴心受拉试验,并结合已有的11根配置HRB335级钢筋的相同构件试验结果,探讨了混凝土表面应变的变化以及钢筋级别对轴心受拉构件混凝土有效受拉面积的影响。结果表明:在轴心受拉情况下,配置HRB335钢筋和配置HRB400钢筋的混凝土有效受拉面积略有差异;对配置HRB400和配置HRB335钢筋的构件,混凝土有效受拉面积可分别按半径为7.3d(d为钢筋直径)和7.4d的圆形面积计算,或分别按边长为6.5d和6.6d的正方形面积计算。 Abstract: The axial tension behaviors of ten prism members with HRB400 steel bars and eleven prism members with HRB335 steel bars were investigated, and the effect of concrete strain and steel grade on the effective tensile cross-sectional area was explored. The results indicate that the effective tensile cross-sectional area of the concrete with HRB400 steel bar has a slightly different with that of the concrete with HRB335 steel bar under the condition of axial tension. A circular area with a radius of 7.3d (d is the diameter of the steel bar) or a 7.4d and a square area with a side length of 6.5d or a 6.6d are proposed respectively based on the experimental data with HRB400 or HRB335 steel bar.
李金昌,韩进舟,李平先,等.轴心受拉构件混凝土有效受拉面积的试验研究[J].混凝土与水泥制品,2021(10):21-24. LI Jin-chang,HAN Jin-zhou,LI Ping-xian,et al.Experimental Research on Effective Tensile Area of Reinforced Concrete Axial Tension Members[J].China Concrete and Cement Products,2021(10):21-24.
煤系偏高岭土对煤矸石混凝土性能的影响研究
煤系偏高岭土对煤矸石混凝土性能的影响研究
  • 王安辉1,潘春宇1,黄益平1,张艳芳1,张舜泉2
2021年第10期
摘要
引用本文
摘   要:为了提高煤矸石混凝土的力学与耐久性能,将煤系偏高岭土部分取代率水泥,研究了不同取代率的煤系偏高岭土对煤矸石混凝土抗压强度、劈拉强度、耐磨性和抗硫酸盐侵蚀性能的影响。结果表明:掺加煤系偏高岭土可显著提高煤矸石混凝土的力学性能;当煤系偏高岭土取代率为30%时,煤矸石混凝土的抗压强度和劈拉强度均最大;掺入适量煤系偏高岭土能够有效改善煤矸石混凝土的耐磨性和抗硫酸盐侵蚀性能,其最佳取代率为30%。 Abstract: To improve the mechanical properties and durability of coal gangue concrete, the effects of coal metakaolin on the compressive strength, splitting tensile strength, abrasion resistance and sulfate resistance of coal gangue concrete were studied by partially substituting cement with coal metakaolin. The results show that the incorporation of coal metakaolin can greatly improve the mechanical properties of coal gangue concrete. When the amount of coal metakaolin is 30%, the compressive strength and splitting tensile strength of coal gangue concrete reach the maximum value. In addition, the incorporation of coal metakaolin can effectively improve the abrasion resistance and sulfate resistance of coal gangue concrete, and the optimum content is 30%. 
王安辉,潘春宇,黄益平,等.煤系偏高岭土对煤矸石混凝土性能的影响研究[J].混凝土与水泥制品,2021(10):25-28. WANG A H,PAN C Y,HUANG Y P,et al.Effect of Coal Metakaolin on Performance of Coal Gangue Concrete[J].China Concrete and Cement Products,2021(10):25-28.
混凝土表面防护涂层材料的研究进展
混凝土表面防护涂层材料的研究进展
  • 余茂林,邓安仲,罗 盛,陈虹合,孙 皓
2021年第10期
摘要
引用本文
摘   要:根据防护涂层对混凝土表面孔隙的封闭效果,将混凝土表面防护涂层分为表面成膜型、孔隙封闭型、疏水浸渍型3种,总结了各类型防护涂层的研究现状、存在的问题,并对进一步研究方向进行了展望。 Abstract: According to the sealing effect of protective coating on concrete surface pores, concrete surface protective coating is classified into three types of surface film coating, pore blocking coating, hydrophobic impregnation coating. The research status and existing problems of various types of protective coatings are summarized, and further research directions are prospected.
余茂林,邓安仲,罗盛,等.混凝土表面防护涂层材料的研究进展[J].混凝土与水泥制品,2021(10):29-34. YU M L,DENG A Z,LUO S,et al.Advances in Surface Protective Coating of Concrete[J].China Concrete and Cement Products,2021(10):29-34.

水泥混凝土制品

芯模振动与径向挤压制管工艺的质量控制要点探讨
芯模振动与径向挤压制管工艺的质量控制要点探讨
  • 许希坤
2021年第10期
摘要
引用本文
摘  要:基于钢筋混凝土排水管的质量要求,介绍了芯模振动与径向挤压两种成型工艺的质量控制要点,包括原材料选择、混凝土配合比设计及性能、机械设备选型与控制、钢筋骨架成型、成型要点和产品养护,并阐述了顶进施工用排水管生产过程及产品检验出厂的注意事项。 Abstract: Based on the quality requirements of reinforced concrete drainage pipe, the key control points of core mold vibration and radial extrusion forming process are introduced, including raw materials selection, concrete mix proportion design and performance, mechanical equipment selection and controlling, reinforcement framework sharping, products forming points and maintenance, and the production process of pipe jacking and the precautions for inspection and delivery are expound.
许希坤.芯模振动与径向挤压制管工艺的质量控制要点探讨[J].混凝土与水泥制品,2021(10):35-38. XU X K.Discussion on Quality Control Points of Core Mold Vibration Tube and Radial Extrusion Pipe Making Process[J].China Concrete and Cement Products,2021(10):35-38.
预制混凝土衬砌管片自动抹面设备的研发
预制混凝土衬砌管片自动抹面设备的研发
  • 尹怀秀1,丁秀芳1,刘锦涛2
2021年第10期
摘要
引用本文
摘   要:为提高预制混凝土衬砌管片外弧面的密实度和平整度,针对生产过程中传统抹面工艺存在的生产效率低、工人配置多、劳动强度大、产品质量不稳定等问题,结合实际生产需要,研发了自动抹面设备,并着重介绍了粗收抹面、精收抹面设备的抹平机构,可为实现管片生产线的完全自动化提供参考。 Abstract: In order to improve the compactness and flatness of the outer arc surface of reinforced concrete segment, aiming at the problems existing in the traditional plastering process, such as low production efficiency, many workers, high labor intensity and unstable product quality, combined with the actual production needs, the automatic plastering equipment is developed, and the plastering mechanism of coarse plastering and fine plastering equipment is emphatically introduced, which can provide reference for realizing the complete automation of reinforced concrete segment production line.
尹怀秀,丁秀芳,刘锦涛.预制混凝土衬砌管片自动抹面设备的研发[J].混凝土与水泥制品,2021(10):39-41. YIN H X,DING X F,LIU J T.Study on Automatic Plastering Equipment for Reinforced Concrete Segments[J].China Concrete and Cement Products,2021(10):39-41.
UHPC预制桥面板的研发与应用
UHPC预制桥面板的研发与应用
  • 高玉军1,2,3,邵建冬1,2,孙 武1,2,3,李 亮4,秦明强1,2,3
2021年第10期
摘要
引用本文
摘   要:为满足广州鹤洞大桥(东西引桥)大中修工程H线引桥用超高性能混凝土(UHPC)预制桥面板的设计指标要求,通过原材料优选、配合比设计及力学性能试验,研究了石英砂级配和掺量、复合掺合料掺量及内养护剂掺量对UHPC工作性和力学性能的影响,制备了各项性能指标均满足设计及施工要求的UHPC。同时,其24 h立方体抗压强度达到设计强度的70%以上,满足拆模起吊要求。 Abstact: According to the design index requirements of UHPC precast bridge deck for H-line approach bridge of Guangzhou Hedong Bridge (east-west approach bridge), through raw material optimization, mix proportion design and experimental research, the effects of quartz sand gradation and content, compound admixture content, internal curing agent content on the workability and mechanical properties of UHPC were studied. The UHPC performance can meet design and construction requirements. Meanwhile, the 24 h compressive strength is more than 70% of the design requirement, which meets the requirements of mold removal and lifting.
高玉军,邵建冬,孙武,等.UHPC预制桥面板的研发与应用[J].混凝土与水泥制品,2021(10):42-47. GAO Yu-jun, SHAO Jian-dong, SUN Wu,et al.Development and Application of UHPC Precast Bridge Deck[J].China Concrete and Cement Products,2021(10):42-47.

纤维水泥及制品

玄武岩纤维混凝土弯曲破坏特征与韧性分析
玄武岩纤维混凝土弯曲破坏特征与韧性分析
  • 王 启1,2,赵俭斌1,董 浩1,张延年1
2021年第10期
摘要
引用本文
摘   要:通过三分点加载试验,研究了玄武岩纤维体积掺量(0、0.25%、0.50%、0.75%、1.00%、1.25%)和长度(6 mm、12 mm)对混凝土弯曲性能的影响。结果表明:长度为12 mm的玄武岩纤维对混凝土抗弯强度的改善效果较好;随着玄武岩纤维掺量的增加,试件的抗弯强度先增后减,且玄武岩纤维的最优掺量为1.00%;玄武岩纤维虽可改善混凝土的等效初始弯曲强度,但对初始弯曲韧度比影响较小,即对峰值荷载前的弯曲韧性改善效果较小。 Abstract: Through three-point loading test, the effect of basalt fiber volume content(0、0.25%、0.50%、0.75%、1.00%、1.25%) and basalt fiber length(6 mm、12 mm) on the flexural properties of concrete was studied. The results show that basalt fiber with the length of 12 mm is more beneficial to bending strength. With the increase of basalt fiber content, the bending strength of concrete first increases and then decreases, and the optimal basalt fiber content is 1.00%. Although basalt fiber can improve the equivalent initial bending strength of concrete, it has little effect on the initial bending toughness ratio, which means there is no obvious improvement of bending toughness before peak load.
王启,赵俭斌,董,浩,等.玄武岩纤维混凝土弯曲破坏特征与韧性分析[J].混凝土与水泥制品,2021(10):48-51. WANG Q,ZHAO J B,DONG H,et al.Analysis of Bending Failure Characteristics and Toughness of Basalt Fiber Reinforced Concrete[J].China Concrete and Cement Products,2021(10):48-51.
BFRP增强水泥砂浆薄板力学性能试验研究
BFRP增强水泥砂浆薄板力学性能试验研究
  • 刘蒲云1,雷梦珂2,3,汪 昕2,3,王凯辉2,3
2021年第10期
摘要
引用本文
摘   要:通过四点弯曲试验和拉伸试验研究了灰砂比、增强材料种类及布置方式对水泥砂浆薄板力学性能的影响。结果表明:增大灰砂比能提高试件的弯曲开裂荷载;缩小BFRP筋的筋网尺寸能提高试件的极限荷载;增大BFRP网格厚度能改善试件的拉伸能力;掺短切玄武岩纤维的BFRP网格增强试件的抗弯和抗拉能力较好,是FRP永久模板的优选方案。 Abstract: Through four-point bending test and tensile test, the effect of cement-sand ratio, reinforcement material type and layout method on the mechanical properties of cement mortar slab was studied. The results show that the increase of cement-sand ratio can enhence the bending cracking load of the specimen. Reducing the size of BFRP bar mesh can increase the ultimate load of the specimen. Increasing the thickness of the BFRP mesh can improve the tensile capacity of the specimen. The BFRP mesh reinforced specimen mixed with chopped basalt fiber has good flexural and tensile capacity, which is the preferred scheme of FRP permanent formwork.
刘蒲云,雷梦珂,汪昕,等.BFRP增强水泥砂浆薄板力学性能试验研究[J].混凝土与水泥制品,2021(10):52-56,61. LIU P Y,LEI M K,WANG X,et al.Experimental Study on Mechanical Properties of BFRP Reinforced Cement Mortar Slab[J].China Concrete and Cement Products,2021(10):52-56,61.

房建材料及制品

外贴钢板预制RC板的抗爆性能分析
外贴钢板预制RC板的抗爆性能分析
  • 周 清1,齐 麟2,孙 亮1,刘海员1
2021年第9期
摘要
引用本文
周清,齐麟,孙亮,等.外贴钢板预制RC板的抗爆性能分析[J].混凝土与水泥制品,2021(9):68-72,81. ZHOU Q,QI L,SUN L,et al.Analysis of Anti-explosion Performance of Precast RC Slab with External Steel Plates[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(9):68-72,81.
双层箍筋约束混凝土圆形柱竖向承载特性数值模拟
双层箍筋约束混凝土圆形柱竖向承载特性数值模拟
  • 郑展展,刘 唤,冯国海,王 莉
2021年第9期
摘要
引用本文
郑展展,刘唤,冯国海,等.双层箍筋约束混凝土圆形柱竖向承载特性数值模拟[J].混凝土与水泥制品,2021(9):73-77. ZHENG Z Z,LIU H,FENG G H,et al.Numerical Simulation of Vertical Bearing Characteristics of Concrete Circular Column Confined by Double Stirrup[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(9):73-77.
基于PKPM对带聚苯板预制剪力墙结构整体性能的分析
基于PKPM对带聚苯板预制剪力墙结构整体性能的分析
  • 冷添银
2021年第9期
摘要
引用本文
冷添银.基于PKPM对带聚苯板预制剪力墙结构整体性能的分析[J].混凝土与水泥制品,2021(9):78-81. LENG T Y.Analysis of Overall Performance of Precast Shear Wall Structure with Polystyrene Board Based on PKPM[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(9):78-81.

检测及试验方法研究

一种无约束混凝土早龄期变形性能试验装置的研制
一种无约束混凝土早龄期变形性能试验装置的研制
  • 张仁瑜,王景贤,徐教宇,戈 兵,黄选明,王淑丽
2021年第7期
摘要
引用本文
摘 要:为解决目前混凝土早龄期变形试验方法存在的缺陷(试模及润滑油脂对混凝土收缩变形的约束、无法准确测得混凝土初凝前的变形),采用重液悬浮混凝土试件的方法来消除试模对试件的变形约束,研发了一种能准确测量混凝土早龄期变形的试验装置。结果表明:通过该试验装置测得的数据具有一定的准确性。 Abstract: In order to overcome the defects of existing test methods(mould and lubricating oil restrict shrinkage of concrete, and cannot accurately measure the deformation before the concrete initial setting), a new testing apparatus for early-age concrete unconstrained deformation was developed for using suspension heavy-liquid  in eliminating the restriction of mould. The results show that the data by testing apparatus has certain accuracy.
张仁瑜,王景贤,徐教宇,等.一种无约束混凝土早龄期变形性能试验装置的研制[J].混凝土与水泥制品,2021(7):84-87. ZHANG R Y,WANG J X,XU J Y,et al.Development of Testing Apparatus for Early-age Concrete Unconstrained Deformation[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):84-87.

施工技术研究

现役钢-UHPC桥面铺装修复技术研究
现役钢-UHPC桥面铺装修复技术研究
  • 吕帅灵1,商涛平2,王洪新1,2,宋卿卿2
2021年第7期
摘要
引用本文
摘   要:为了解决正交异性钢桥面的疲劳破坏病害,提出了一种基于免蒸养超高性能混凝土(UHPC)的钢桥面组合结构,结合实际工程给出了栓钉布置和钢筋间距的优化方案,总结了适用于钢桥面铺装的UHPC材料性能指标;对于大面积摊铺问题,设计了UHPC专用铺装施工设备,并进行了工艺性试验;通过有限元模拟分析了润扬大桥不同铺装体系下的变形情况,并与实桥监测数据进行了对比。结果表明:免蒸养UHPC结合完善的养护工艺能够抑制早期收缩裂缝的产生与发展;UHPC铺装相较于原环氧沥青混凝土铺装,钢桥面板的最大拉应变下降了53.3%,最大肋间相对挠度下降了42%;UHPC铺装能大幅提高桥面系的刚度,降低正交异性钢桥面板和铺装层的疲劳开裂风险。 Abstract: In order to solve the fatigue damage of orthotropic steel bridge deck, a composite structure of steel bridge deck based on non-steam curing ultra-high performance concrete (UHPC) was proposed. According to the supporting project, the optimization scheme of stud arrangement and reinforcement spacing was proposed, and the performance indexes of UHPC material suitable for steel bridge deck pavement were summarized. For the large-area paving problem, the special paving construction equipment for UHPC was designed and the process was carried out. The deformation of Runyang Bridge under different pavement systems was analyzed by finite element method, and compared with the monitoring data of real bridge. The results show that non-steam curing UHPC combined with perfect curing technology can control the generation and development of early shrinkage cracks. Compared with the original epoxy asphalt concrete pavement, the maximum tensile strain of steel deck is reduced by 53.3%, and the maximum relative deflection between ribs is reduced by 42%. UHPC pavement system can greatly improve the stiffness of bridge deck system, and reduce the risk of fatigue cracking of orthotropic steel deck and pavement insurance.
吕帅灵,商涛平,王洪新,等.现役钢-UHPC桥面铺装修复技术研究[J].混凝土与水泥制品,2021(7):88-92. LYU S L,SHANG T P,WANG H X,et al.Research on Repair Technology of Existing Steel-UHPC Composite Bridge Deck[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):88-92.

节能与环保

不锈钢管与钢纤维增强再生混凝土组合柱的轴压性能研究
不锈钢管与钢纤维增强再生混凝土组合柱的轴压性能研究
  • 黄 波1,张 亮2,翟江棚3
2021年第10期
摘要
引用本文
摘   要:研究了不同再生骨料替代率下,不锈钢管与钢纤维增强再生混凝土组合柱的轴压性能,获得了试件的破坏形态、荷载-位移曲线和轴压刚度。结果表明:根据荷载-位移曲线的变化特征,可将试件按承载力稳定性分为不稳定和稳定两类;不稳定试件峰值荷载后的荷载-位移曲线快速探底,此后荷载开始缓慢提升,轴向变形快速增大;稳定试件峰值荷载后的荷载-位移曲线沿水平方向发展,试件的持荷能力突出;试件的轴压刚度在0.3~0.9倍的峰值荷载时达到最大,此时钢与混凝土的材料损伤相对较小,钢管对混凝土的约束效应相对有效;随着再生骨料替代率的增大,试件的轴压刚度逐渐降低;钢纤维抑制了裂缝的发展,维护了混凝土的整体性,从而提高了试件的轴压刚度。 Abstract: The axial compression performance of stainless steel pipe and steel fiber reinforced recycled concrete composite columns with different recycled aggregate replacement rates was studied, and the failure mode, load-displacement curve and axial compression stiffness were obtained. The results show that according to the characteristics of load-displacement curve, the specimens can be divided into unstable and stable types according to the bearing capacity stability. The load-displacement curve of the unstable specimen after the peak load quickly reaches the bottom, after which the load starts to increase slowly, and the axial deformation increases rapidly. The load-displacement curve of the stable specimen  after the peak load develops in the horizontal direction, and the load-holding capacity of the specimen is outstanding. The axial compression stiffness of the specimen reaches the maximum when the load is 0.3~0.9 times of the peak load, and at this time, the material damage of steel and concrete is relatively small, and the restraint effect of steel pipe on concrete is relatively effective. With the increase of the replacement rate of recycled aggregate, the axial compression stiffness of the specimen decreases gradually. The steel fiber inhibits the development of cracks and maintains the integrity of the concrete, thereby improving the axial stiffness of the specimen.
黄波,张亮,翟江棚.不锈钢管与钢纤维增强再生混凝土组合柱的轴压性能研究[J].混凝土与水泥制品,2021(10):77-80. HUANG B,ZHANG L,ZHAI J P.Study on Axial Compression Performance of Stainless Steel Pipe and Steel Fiber Reinforced Recycled Concrete Composite Columns[J].China Concrete and Cement Products,2021(10):77-80.
沥青搅拌站废粉对混凝土力学与耐久性能的影响研究
沥青搅拌站废粉对混凝土力学与耐久性能的影响研究
  • 张兰峰1,王恒昌2,蓝亚明3,胡 胜1,邓再桔1
2021年第10期
摘要
引用本文
张兰峰,王恒昌,蓝亚明,等.沥青搅拌站废粉对混凝土力学与耐久性能的影响研究[J].混凝土与水泥制品,2021(10):81-85. ZHANG Lan-feng, WANG Heng-chang, LAN Ya-ming,et al.Study on the Effect of Waste Powder From Asphalt Mixing Station on the Mechanical and Durability of Concrete[J].China Concrete and Cement Products,2021(10):81-85.
废玻璃粉对高延性水泥基复合材料性能的影响
废玻璃粉对高延性水泥基复合材料性能的影响
  • 李碧雄,张治博,汪知文
2021年第10期
摘要
引用本文
摘   要:采用粒径为75~300 μm的废玻璃粉取代部分河砂制备了高延性水泥基复合材料(HDCC),研究了废玻璃粉取代率(10%、20%、30%)对HDCC抗压、抗拉和抗弯性能以及流动性的影响。结果表明:废玻璃粉的掺入提高了HDCC的流动度;HDCC的抗压强度随废玻璃粉取代率的增加而增大;当废玻璃粉取代率为10%时,HDCC的拉伸性能略有改善,取代率继续增大时,抗拉性能劣化;随废玻璃粉取代率的增加,HDCC的弯曲韧性降低,裂缝数量减少,裂缝宽度增大。此外,拉伸过程中废玻璃粉对PVA纤维有刮伤,削弱了PVA纤维的拉伸性能,导致HDCC的抗拉强度和抗弯强度降低。 Abstract: High ductility cementitious composites (HDCC) were prepared by replacing part of river sand with waste glass powder with a particle size of 75~300 μm, and the effects of waste glass powder replacement rates(10%、20%、30%)  on the compressive, tensile and flexural properties and fluidity of HDCC were studied. The results show that the fluidity of HDCC is improved by adding waste glass powder. The compressive strength of HDCC increases with the increase of waste glass powder replacement rate. When waste glass powder replacement rate is 10%, the tensile properties of HDCC are slightly improved, and the tensile properties are deteriorated when the replacement rate continues to increase. With the increase of waste glass powder replacement rate, the bending toughness of HDCC decreases, the number of cracks decreases and the width of cracks increases. In addition, the waste glass powder scratches PVA fiber during the tensile process, which weakens the tensile properties of PVA fiber, thus resulting in the decrease of tensile strength and bending strength of HDCC.
李碧雄,张治博,汪知文.废玻璃粉对高延性水泥基复合材料性能的影响[J].混凝土与水泥制品,2021(10):86-90,94. LI B X,ZHANG Z B,WANG Z W.Influence of Waste Glass Powder on the Properties of High Ductility Cementitious Composites[J].China Concrete and Cement Products,2021(10):86-90,94.
纳米SiO2对掺膨胀剂碱矿渣砂浆力学及收缩性能的影响
纳米SiO2对掺膨胀剂碱矿渣砂浆力学及收缩性能的影响
  • 田 翔,陈佩圆,娄 星,李 进
2021年第10期
摘要
引用本文
摘   要:研究了纳米SiO2掺量对掺膨胀剂碱矿渣砂浆抗压强度、自收缩、干燥收缩和孔隙率的影响。结果表明:膨胀剂的掺入有助于减少碱激发矿渣砂浆的自收缩和干燥收缩,但会显著降低早期强度;掺入2%纳米SiO2可基本补偿由于掺入膨胀剂造成的强度损失,且对碱矿渣砂浆自收缩和干燥收缩的影响较小;适量纳米SiO2的掺入可显著降低掺膨胀剂碱矿渣砂浆的孔隙率。 Abstract: The effects of nano-SiO2 content on the compressive strength, self-shrinkage, dry shrinkage and porosity of the alkali-activated slag mortar(AASM) with expansion agent were analyzed. The results show that the addition of expansive agent can reduce the self-shrinkage and dry shrinkage of AASM, but can significantly reduce its early strength. The addition of 2% nano-SiO2 can basically compensate the strength loss caused by the addition of expansive agent, and has little effect on the self-shrinkage and dry shrinkage of AASM. Appropriate amount of nano-SiO2 can significantly reduce the porosity of AASM with expansion agent.  
田翔,陈佩圆,娄星,等.纳米SiO2对掺膨胀剂碱矿渣砂浆力学及收缩性能的影响[J].混凝土与水泥制品,2021(10):91-94. TIAN X,CHEN P Y,LOU X,et al.Effect of Nano-SiO2 on Mechanical and Shrinkage Properties of Alkali-activated Slag Mortar with Expansion Agent[J].China Concrete and Cement Products,2021(10):91-94.
闪长玢岩的吸水特性及其对混凝土施工性能的影响研究
闪长玢岩的吸水特性及其对混凝土施工性能的影响研究
  • 潘金敢1,王子龙1,柏立果1,程 猛2,毛永琳2
2021年第10期
摘要
引用本文
摘   要:测试了闪长玢岩的吸水特性,研究了闪长玢岩作为粗骨料对混凝土施工性能的影响。结果表明:闪长玢岩碎石内部的裂隙、孔隙较发达,吸水率高,但吸水速率慢;闪长玢岩的掺入使得混凝土拌合物的流动性损失显著增加,泌水率降低;采用骨料预湿工艺和掺减水剂的方法可以解决闪长玢岩混凝土的施工性能问题。 Abstract: The water absorption characteristics of diorite porphyrite was tested, and its influence on the construction performance of concrete was studied. The results show that the fissures and pores in the diorite porphyrite are relatively developed, and the water absorption is high, but the water absorption rate is slow. The addition of diorite porphyrite significantly increases the fluidity loss of concrete mixture and reduces the bleeding rate. The problem of construction performance of diorite porphyrite concrete can be solved by using aggregate pre-wetting technology and adding water reducing agent.
潘金敢,王子龙,柏立果,等.闪长玢岩的吸水特性及其对混凝土施工性能的影响研究[J].混凝土与水泥制品,2021(10):95-99. PAN J G,WANG Z L,BAI L G,et al.Study on Water Absorption Characteristics of Diorite Porphyrite and Its Influence on the Construction Performance of Concrete[J].China Concrete and Cement Products,2021(10):95-99.

书评

矸石电厂粉煤灰的活化及应用技术 ——评《矸石电厂粉煤灰的活化及应用》
矸石电厂粉煤灰的活化及应用技术 ——评《矸石电厂粉煤灰的活化及应用》
  • 冯月娥
2021年第4期
摘要
引用本文
我国混凝土工程建设飞速发展,水泥用量与日俱增。而生产水泥需要消耗大量能源,这与国家的绿色环保政策背道而驰。矸石电厂用的煤矸石燃烧后灰分较高,粉煤灰的产出量是燃煤电厂的2倍左右,产出的粉煤灰含碳量高,理化特性与燃煤电厂粉煤灰差别较大,且造成了严重的环境污染和土地资源浪费。矸石电厂粉煤灰的循环利用已逐渐引起了学术界的关注,成为了研究热点。陈杰编著的《矸石电厂粉煤灰的活化及应用》一书通过对矸石电厂粉煤灰的形貌特征、化学成分、矿物组成等进行分析,采用化学、物理和物理化学活化技术对粉煤灰-水泥胶砂体系进行激活,得出了合理的活化方案;此外,以矸石电厂粉煤灰取代水泥制造粉煤灰基膏体充填材料,实现废物循环利用。笔者通过学习,认为该书具有较强的实用性,对于实现循环经济具有一定的指导意义,现简要总结重点内容。
冯月娥.矸石电厂粉煤灰的活化及应用技术——评《矸石电厂粉煤灰的活化及应用》[J].混凝土与水泥制品,2021(4):103.

论文推荐

再生混凝土配合比设计初探
再生混凝土配合比设计初探
  • 张亚梅,秦鸿根,孙 伟,郝东明,宁 钟
2002年第2期
摘要
引用本文
摘 要:通过实验研究探索了再生混凝土配合比设计的方法, 提出了在普通混凝土配合比设计的基础上进行废混凝土骨料的预吸水, 并通过掺加优质粉煤灰、减水剂或二者复合, 可成功地配制同时满足工作性和强度要求的再生混凝土。 根据这种方法 , 配制的全部使用废混凝土骨料为粗骨料的再生混凝土28天的抗压强度高达54.6MPa。 Abstract: The approach for the proportion design of recycled aggregate concrete is investigated according to the experimental study.It is suggested that the proportion of cement, sand and aggregate can be calculated based on the current proportion design code for ordinary concrete.As regard to the water content, the water adsorption of waste concrete aggregate within certain time period should also be considered and added to the water content calculated according to the code for ordinary concrete .In addition, the using of good quality fly ash and superplasticizer can improve the strength of recycled aggregate concrete.The highest compressive strength of the concrete, in which all aggregate is insteaded by waste concrete aggregate, is up to 54.6MPa at 28days.
摘 要:通过实验研究探索了再生混凝土配合比设计的方法, 提出了在普通混凝土配合比设计的基础上进行废混凝土骨料的预吸水, 并通过掺加优质粉煤灰、减水剂或二者复合, 可成功地配制同时满足工作性和强度要求的再生混凝土。 根据这种方法 , 配制的全部使用废混凝土骨料为粗骨料的再生混凝土28天的抗压强度高达54.6MPa。 Abstract: The approach for the proportion design of recycled aggregate concrete is investigated according to the experimental study.It is suggested that the proportion of cement, sand and aggregate can be calculated based on the current proportion design code for ordinary concrete.As regard to the water content, the water adsorption of waste concrete aggregate within certain time period should also be considered and added to the water content calculated according to the code for ordinary concrete .In addition, the using of good quality fly ash and superplasticizer can improve the strength of recycled aggregate concrete.The highest compressive strength of the concrete, in which all aggregate is insteaded by waste concrete aggregate, is up to 54.6MPa at 28days.
高性能混凝土———绿色混凝土
高性能混凝土———绿色混凝土
  • 吴中伟
2000年第2期
摘要
引用本文
提要:21世纪水泥混凝土面临两大问题:(1)可持续发展问题;(2)可知性问题。本文以前者为主并论述高性能混凝土技术的要点。
绿色高性能混凝土 ———混凝土的发展方向
绿色高性能混凝土 ———混凝土的发展方向
  • 吴中伟
1998年第1期
摘要
引用本文
摘要:本文从合理利用资源,保护人类赖于生存的自然环境不遭破坏并实现可持续发展的战略高度出发,论述了混凝土目前及今后的发展方向,提出了发展“绿色高性能混凝土(GHPC)的观点。 Abstract :In this paper the trend of concrete development at present and future has been espounded with a far -sighted strategy , that is reasonably utilizing the resource , protecting the natural environment , which human existance relies on , and realizing the sustainable development .And a point of view for developing Green High Performance Concrete has been put forward .
200~300MPa 活性粉末混凝土(RPC)的配制技术研究
200~300MPa 活性粉末混凝土(RPC)的配制技术研究
  • 何 峰,黄政宇
2000年第4期
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摘 要:试验研究了原材料品种、 性质及配合比对 RPC 强度的影响;在未掺钢纤维的情况下, 配制出了流动性好, 高温养护(200℃)下抗压强度达 229.0MPa 的超高强混凝土, 在掺钢纤维以及高温养护的情况下 RPC 的抗压强度高达 298.6MPa。 Abstract:ased on experiments , the effects of kinds , properties and proportioning of raw materials on the compressive strength of RPC was studied.As a result, ultra high-strength concrete with excellent fluidity and compressive strength up to 229.0MPa under high temperature curing (200℃)was prepared , while the compressive strength of RPC adding with steel fiber was up to 298.6MPa.
纤维增强—水泥基材料的未来
纤维增强—水泥基材料的未来
  • 吴中伟
1999年第1期
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一 、大宗建材必须是可持续发展的绿色材料 水泥与水泥基材料是当今最大宗的人造材料 。世 界水泥年产量已超过 15 亿吨 (我国 1997 年为 5.1 亿 吨 ,达世界产量的三分之一), 据此推算 ,水泥基材料总 量在 60~ 70 亿吨上下 。估计所消耗的主要资源为优质 石灰石 15亿吨 、砂石集料 40 亿 m 3 , 排放的 CO 2(主要 温室气体)12亿吨以上 , 还有其他有害气体与大量粉 尘 ,严重污染环境 。如今后几年我国水泥年产量保持在 5亿吨 , 按合理的指标估算 , 每年消耗的能源 、资源与 造成的环境负担如表 1。 可见不论全世界与我国 ,都必须依靠科技 ,大力节 约能源资料 ,保护环境 ,否则水泥与水泥基材料将成为 不可持续发展的材料 。水泥基材料必须向高性能发展 , 向减少用量 , 延长寿命 , 增加功能 , 尤其降低环境代价 的方向努力 。
橡胶粉改性的高韧性混凝土研究
橡胶粉改性的高韧性混凝土研究
  • 宋少民,刘娟红,金树新
1997年第1期
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摘要 : 本文探讨了 橡胶粉对 混授土 抗折 、 抗压 强 度及抗冲击性 能的影响 。 研 究结 果表明橡胶 粉改性 混 凝土的抗折 、 抗压 强 度 较基准混 凝土 变化不 大 , 冲击荷载则 明 显提 高 。 采用 适当 粘结剂可 以 改善橡胶粉与混 授 土的界面状况 , 大幅度提高混凝土 的抗 冲击性能 。 Abstract: In this paper, the influence of rubber powder on flexural, compr回sive and impact strength of c。ncrete has been studied. The r田ults show that, in comparison with the control, there is lttle diifference to flexural and com pressive strength of the modifiied c。ncrete. H。wever, the impact property w出improved 。bviosly. Further more by using suitable adhesion agent, the interface state between rubber and conorete oan be improved, which greatly benefits the impact property of concrete.
再生混凝土集料的研究
再生混凝土集料的研究
  • 王武祥,刘立,尚礼忠,王玲
2001年第4期
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摘要:再生集料作为废弃混凝土的主要用途, 其性能及对混凝土的性能影响程度将决定废弃混凝土的再生利用可能, 本文进行了这方面的探索性研究。
高性能减水剂的研究现状与展望
高性能减水剂的研究现状与展望
  • 李崇智,冯乃谦,李永德,覃维祖
2001年第2期
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摘 要:本文概述了国内外高性能减水剂的主要性能及发展现状, 介绍了高性能减水剂的种类与组成, 提出了有关高性能减水剂的研究内容及今后研究方向。 Abstract:In this paper, the main properties and the present development condition of the high performance water -reducing agent in the world have been summarized, then the composites of various type and something about the research contents and trends have been proposed.
混凝土渗透性与微观结构关系的研究
混凝土渗透性与微观结构关系的研究
  • 李淑进 1, 赵铁军 2, 吴科如 1
2004年第2期
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摘 要:根据混凝土的渗透性大小与其孔结构参数直接相关的观点, 采用压汞试验测定了水化 60d的水泥浆体孔结构和孔分布情况, 并采用扫描电镜研究了混凝土的微观结构与形貌。结果表明, 水胶比对混凝土的总孔隙率和孔径分布的影响都很大;掺入20%的粉煤灰的混凝土的累积孔隙体积率有所减少, 孔径分布偏向于凝胶孔, 且其微观结构均匀密实, Ca(OH)2 的晶粒含量较少。混凝土微观结构的改善有效地降低了其渗透性。 Abstract:t is directed for correlationship between the permeability and the microstructure parameter of concrete.The porosity and diameter distribution of pores of 60d aged cement mortar are investigated by MIP, and the microstructure of concrete is observed by SEM.The results shows that the water cement ratio largely effects the total pore volume and the diameter distribution and, when added with fly ash by weight of 20%cement content, the total pore volume is decreased.
超高性能混凝土(UHPC)的配制及应用探究
超高性能混凝土(UHPC)的配制及应用探究
  • 李 锋,孔文艺,罗 健,范晓玲,刘思昊
2019年第7期
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摘   要:选用合适的掺合料,采用正交法和最紧密堆积理论进行了超高性能混凝土(UHPC)基体的配合比实验,通过对力学性能检测,确定了UHPC基体的最优配合比,并在此基础上探究了钢纤维的掺量和掺入方式对UHPC性能的影响。试验结果表明,选用合适的掺合料,通过合适的配合比试验设计能配制出适于应用的UHPC。 Abstract:The mix proportion experiment of ultra high performance concrete without steel fibre was done by using right admixtures as reactive powder, orthogonal experiment and the closest packing experiment as methods. The optimal mix proportion of the ultra high performance concrete without steel fibre was obtained by testing the mechanical properties. And the influence of the incorporation method and the content of steel fiber on the performance of the ultra high performance concrete was studied. The results show that UHPC can also be obtained by using right admixtures and proper mix proportion design.
李锋,孔文艺,罗健,等.超高性能混凝土(UHPC)的配制及应用探究[J].混凝土与水泥制品,2019(7):26-29. LI F,KONG W Y,LUO J,et al.Discussion on Preparation and Application of Ultra High Performance Concrete (UHPC)[J].China Concrete and Cement Products,2019(7):26-29.
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